Tank Crashed!!!

[cubuffs]

Hi,
My tank crashed during the night, killing 5 of my fish including a S&S puffer, damsel, Lion, Panther Grouper, and a Harl. Tusk. When I woke up, the fish lost most of their color. I did a water change the night before, so I was thinking that bleach may have entered my bucket, but I am not sure. In addition, the water was tested and everything was fine, but the ammonia was a little high. Can you help me figure this out?
I have a 180 gallon tank cycling, so I wanted to put the live rock from the tank that crashed into it, but I am very hesitant now. Should I rinse the LR, or just put it in the cycling tank, or do something different?
Any suggestions help, and thank you for your time and assistance.

 

[beth]

You should stablize the existing tank before making any changes. Do you not have a deadicated bucket for your fish tank? Is the bucket used for other purposes?
Are there any fish left?

 

[cubuffs]

I only have 2 species left: a 30-40" zebra moray, and a 15-20# white ribbon eel. Everything else died.
Per the other question, I do have a designated bucket, but I do believe that one of my roomies may have used it for other purposes. That may have been the problem.